Portable molding machine



July 28, 1&931. E. o. BEARDsuEY E1' Al.

` PORTABLE MOLDING MACHINE Filed Feb. 15, 192e 5 sheets-sheet 1 July 28, 11931.

E. O. BEARDSLEY ET AL FORTABLE MOLDING MACHINE 5 Sheets-Sheet 2 l I lli July 28, 1931.

, E. o. BEARDsLL-:Y ET Al.

PORTABLE HOLDING MACHINE Filed Feb. 15, 1926 5 Sheets-Sheet 3 www @ya y @al July 28, 1931.

E. o. BEARDSLEY ET AL PORTABLE HOLDING MACHINE Filed Feb. 15, 1925 5 Sheets-Shed'. 4

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July 28, 1931. E. o. BEADSLEY E1' AL 1,816,000

PORTABLE HOLDING MACHINE Filed'Feb, '15, 192e 5 sheets-sheet s Patented July 28, 1931 c UNITED rSTATES PATENT OFFICE' ELMR O. BEARDSLEY AND WALTER F. PIPER, OF CHICAGO, ILLINOIS, ASSIG-NORS T THE BEARDSLEY @c PIPER COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS PORTABLE HOLDING MACHINE Application fue@ February 15, 1926. serial No. saisi.

The invention relates to portable molding machines.

i One object of the present invention is to improve portable molding machines of the type exemplified in our Patent No. 1,408,796

dated March 7, 1922, by equipping the wheeled truck, on which the projector is carried, with means' for conveniently placin'gllasks into and out of the range of the projector to avoid delays or time losses in flask-filling.

Another object is to provide an improved construction in this type of machine, for housing the motor and driving mechanism.

Other objects will appear from the following detailed description. f

The invention consists in the several novel features hereinafter set forth and more particularly dened by claims. at the conclusion hereof. i

In the drawingsrFig. 1 is a side elevation. Fig. 1a is a detail section ofthe pivotal bearing for the crane-arm. Fig. 2

is a rear elevation. Fig. 3 is a front eleva-y tion. Fig. 8b is a section on line Sli-3b of Fig. 3. Fig. 3c is a section on line 30-30 of' Fig. 3. Fig. 4 is a section on. line 4-4 of Fig. 1. Fig. 4m is a section ,on line 4oz- 4a of Fig. 1. Fig. 4b is a side elevation, showing the pawl and ratchet mechanism for propelling the truck. Fig. 5 is a section on line 5-5 of Fig. 1. Fig.. 5a, is a section on line 5ta-5a of Fig. 5.

The invention is exemplified with a Wheeled truck-frame adapted to travel o n tracks in the molding room floor. This frame comprises sides 10 and 11, which are rigidly cross-connected by pipes 12 and 13. 'Pipe 13 is secured by U-bolts 16 to the frame-sides. Pipe 12' is secured to the frame-sides by U-bolts 18. The rear ofthe truck is sustained by a pair of tractionwheels 21 having toothed peripheries 22 meshing with rack 23 on rails 24 set into the molding room floor. A'shaft 26 extends through pipe 13 and connects wheels 21 for conjoint rotation. The front of the truck is supported by wheels 27 which ride on flat portions of rails 24. A .supportingbase for the machine for pro]ecting sand into flasks comprises a cast-frame 35 which is secured, by U-bolts 37, to pipe 13, and by U-bolts 41 to pipe 12. A cast-standard 60, for supporting the upper end of a sand elevator, is secured on frame 85 by U-bolts 41.

The molding machine on the truck comprises a jib 44 pivoted to swing horizontally on a post 42 carried by frame 35; an arm 45,

which is pivoted at 44a on the outer end of a jib 44, so it may swing horizontally relatively to said jibf; a sand-projector 46 on the outer end of arm 45; an electric motor 47, mounted on said arm and connected to drive the rotor of the projector; a vibratory chute 48 mounted to swing with jib 44, and into which sand is delivered by the elevator; mechanism for vibrating the chute mounted to swing with jib 44 and contained in a housing 49; and an endless feed belt, which is mounted to swing with arm 45, receives sand from chute 48 and delivers it to the projector, and is driven by the motor 47. This structure may be of the construction set vf orth in our Patent No. 1,408,493 dated March 7, 1922, to which reference may be had foi` a more detailed description, and eXs emplifies a sand-projector which is mounted onv a truck and is supported so it may be moved horizontally over subjacent flasks to fill all portions thereof.y

To supply a stream of sand to the projector from a pile on the floor ahead of the truck, a cross-conveyor, consisting of spiral blades 54, fixed to a shaft 58 which is suitably journalled in the frame-sides 11 and 12, conveys sand from the pile laterally to a centrally disposed elevator which discharges the sand into chute 48. This elevator comprises an endless chain 56 and buckets 61 on the chain. The chain is driven by a sprocket 57 on shaft 58 and passes around an idler sprocket 59, suitably mounted at the upper end of standard 60. The mechanism for driving the cross-conveyor and elevator comprises an electricmotor 68; a pinion 71 on the motor shaft; a gear-wheel 72, meshing with pinion 71 and mounted on frame-side 11; a pinion 74 rigid with gear 72; and a gear 75 which meshes with pinion 74 and is fixed to one end of the cross-conveyor shaft58. rIhis structure exemplies mechanism on the truck for conveying sand from a pile on the floor to the molding-machine on the truck.

The mechanism for driving the traction wheels, to propel the truck into the pile of sand on the door, comprises an eccentric pin 76,r rotating with shaft 58; a pawl 78 pivoted to and reciprocated by said pin, and a ratchet-wheel 7 9 operated by said pawl; and a pinion 80 rigid with said ratchet-wheel and meshing with one of the tractionwheels 21.

` The motor 68 and the gearing driven thereby are enclosed to exclude sand therefrom, In the present invention, the side frame 11 is formed with a bottomv wall 11a, 'an end-wall 11b and side-walls 11c which Yform a chamber 68a for motor 68 and with anintegral transversely extending wall 11d,

which forms a chamber 11e for gears 71,

' by bolts 11g, so that access to the gears may be provided when desired. removable plat-e 11r is provided on the front side-wall 11c to provide access to the motor. The top of the chamber 68a is formed by a'platelike casting 11h which is removably secured by bolts 11k to close the top of the chamber 68a. To provide for the circulation of air around the motor 68 to keep it cool, inlet ducts 11l and 11 are formed in the top plate, and an outlet duct 11m is also formed in' said plate. Electric motors are usually equipped with means for circulating air through the casing so that air will be drawn j into ducts 111, llnand discharged through duct 11m while the motor is running. rIhe motor 68 is secured by bolts 68b to the plate 11h, so that it will be removable with said plate Yfor convenient inspection or access when a motor repair is necessary. This construction exemplifies means for housing the electric motor and the gearing driven thereby, which is composed of walls integrally formed with one of the frame sides,

` vand in which provision for the circulation of air is made around the motor. The air ducts lopen laterally, so that there is little likelihood of sand being drawn into them.

In the operation of molding machines of the tractor type, it is desirable to bring flasks within the range of the projector with suicient speed so that there will be no idle period, and one object of the invention is to equip the truck with means for this purpose. The cross pipe 12 of the truck frame is extended to project laterally 'from either rvside to supportmasts80. These masts are its formed of pipes, and the lower end of each is fixed in a fitting 81 which is seated on frame-pipe 12 and'lixedly secured thereon masts are secured laterally by pipes 88. The outer end of each pipe is provided with a fitting 84which is seated against the mast and fixedly secured thereon by U-bolts 85.

The inner end of each pipe 83 is secured by a U-bolt 86 to a lug 87 which is bolted to one side of' the elevator supporting mast 60 (Fig. 8b). rIhe masts are additionally sesured by inclined tubular braces 88, the upper ends of which extend to lugs 89 on fittings 84, and the lower ends of which extend to lugs 90 on plates 91 which are fixed to the front of the frame-sides 11 and 12. respectively. Rods 92 extend through pipes 88 and the lugs at the ends thereof, to fixedly secure said pipes to the frame structure. The upper end of each mast 80 pivotally supports a crane-arm 94. Said" arm comprises an I-beam 95 and a bracket 96, to

which the beam is fixedly secured, and which is provided with a socket 97 around the upper-end of one of the masts 80. The socket is supported around the mast by a lower ballbearing 98 and an upper `ball-bearing 99. A cap 100 is secured to, and closes the upper endof, the mast 80, being secured thereto by screws 101 which are threaded to a plug 102'which is fastened in the mast by i Y a pin 103. Cap 100 extends over Vpacking 104 Ain the socket 99 to exclude sand from the upper bearing.V A plate 105 fits in an opening in the top of the socket to cover the cap. Packing 106 is suitably held inthe lower end of socket 97, to prevent sand from working into the lower ball-bearing.

The crane-arm 94 is adapted to support a holst of any suitable construction, as exemplified by a pneumatic cylinder 107 containing a piston for raising and lowering a rod 108 which carries at its lower end a hook 109 adapted to engage the usual blade on a flask, so that it can be raised and lowered by the lift. The cylinder 107 is suspended from a carriage 110 provided with rollers 111 adapted to run on the lower flange of the I-beam 95, so that the flask may be transported lengthwise of the arm and to and from the mast.

In operation, the truck-frame is propelled 31;."

forwardly slowly towards the pile ofV sand from which the projector will be supplied while the operator moves the projector laterally to fill all portions of a flask at the rear of the truck. While one flask is being within range of the projector, so that the latter may bevkept supplied with empty Hasks to avoid idle periods.

The invention exemplies a portable molding machine of the tractor type, which is equipped with lifting mechanism for bringing the flasks into and out of therange of kthe projector; which is simple in construcf tion, and which forms a part of the truck by which the projector is supported and which makes it possible to avoid time losses, so that the projector may be worked to its maximum capacity.

` The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what we claim as new and desire to secure by Letters Patent, is: Y

l. The combination of a truck adapted to travel along a row of flasks'on a foundry floor, said truck comprising side frames and a cross-member, a mast secured to the outer end of said cross-member, an arm pivotallyk mounted on the mast and operative to swing the flasks into and out of position adjacent the truck, a molding machine for filling the flasks mounted on the truck, and means for delivering sand to the molding machine.

2. The combination of a truck adapted to travel along a row of flasks on a foundry floor, said truck comprising side frames and a cross-member extended to project beyond the said frames, a mast secured to the outer end of said cross-member, a crane-arm and operative to move the flasks from the rows into and out of position adjacent the truck mounted on the mast, a hoist movably mounted on the arm, a molding machine for filling the flasks mounted on the truck, and means for delivering sand to the molding machine.

3. The combination of a truck adapted to travel over a foundry floor between rows of flasks, said truck comprising side frames and a cross-member extended to project laterally beyond said frames, masts supported at the outer ends of said crossmember, crane-arms mounted on the masts respectively and operative to swing the flasks from the rows into and out ofposition adjacent the truck, a molding machine for filling the flasks, mounted on the truck, and means for delivering sand to the molding machine.

4. The combination of a truck adapted to travel over a foundry floor between rows of ilasks, said truck comprising side frames and a cross-member extended to project laterally beyond said frames, tubular masts clamped to the outery ends of said crossmember, crane-arms mounted on the masts respectively and" operative to swing the flask from the rows into and out of position adjacent the truck, a molding machine for filling the flasks mounted on the truck, propelling mechanism on the truck, afnd means for delivering sand to the molding machine.

5. The combination with a truck adapted to travel along a row of flasks on a foundry floor, a molding machine mounted on the truck, mechanism for propelling the truck, mechanism for conveying sand to the molding machine, the truck comprising side frames and a cross-member, a mast secured to one end of said cross-member, a cranearm pivotally mounted on the mast, a hoist movably mounted on the arm and adapted to be used in moving the flasks from the row into and out of a position to be filled by said molding machine, and brace-members between the mast and the truck-frame. y

6. The combination with a truck adapted to travel over a foundry floor between rows of flasks, a molding machine mounted on the truck, mechanism for propelling the truck, mechanism mounted on the truck for conveying sand to the molding machine, the truck comprising side frames and a crossmember, masts secured to the outer ends of said cross-member, crane arms pivotallyy mounted on the masts, hoists movably mounted on the arms respectively and adapted for use in moving the flasks from the row into and out of position to be filled by said molding machine, and brace-members between the masts and the frame-sides.

7. The combination with a truck adapted to travel along a row of flasks, on a foundry floor, a molding machine mounted on the truck, mechanism on the truck for propelling it, mechanism for conveying sand to the molding machine comprising an elevator, an elevator standard on the truck, the truck comprising side frames and a crossmember, a mast secured to the outer end of said cross-member, a crane arm pivotally mounted on the mast, a hoist movably mounted on the arm and adapted for use in moving the flasks from the row into and out of a position to be filled by said molding machine, and a brace-member between the mast and the standard. s

' 8. The combination with a truck adapted to travel along a row of flasks, on a foundry floor, a molding machine mounted on the truck, mechanism on the rtruck for propelling i-t, mechanism for conveying sand to the molding machine comprising an -elevator, an elevator standard on the truck, the truck comprising side frames and a cross-member, a mast secured to the outer end of said cross-member, a crane-arm pivotally mounted on the mast, a hoist movably mounted on the arm adapted for use in moving kthe flasks from the row into and out of a position to be filled by the molding mavfchine,` and brace-members between the mast and the standard and a side-frame.

9. The combination with a truck and adapted to'travel over a foundry floor between rows of flasks, a molding machine mounted on the truck, mechanism for propelling the truck, mechanism mounted on the truck for conveying sand to the molding machine, a central standardV on the truck, the truck comprising side-frames and ya ,cross-member, masts secured to the outer ends of said cross-member, crane-arms pivotally mounted on the masts, hosts movably mounted on the arms respectively and adapted for use in moving the flasks from the rows into and out of position to be filled by the molding machine, and brace-members between the masts and the standard and the side-frames- Signed at Chicago, of February, 1926.

v ELMER O. BEARDSLEY.

WALTER F. PIPER.

Illinois, this and day Y 

